MLchartDataset catalogue

Mixed-metal hydroxide

Term · Oil and gas · MLC-T-OAG-002395

A class of synthetic layered double hydroxides, typically magnesium and aluminium hydroxide formed by co-precipitation, whose particles carry a positive charge. Added to bentonite-based water muds, they link the negatively charged clay platelets into a fragile gel, giving strong shear thinning, high low-shear viscosity and good suspension of cuttings. MMH is a viscosifier only, so a separate polymer such as starch or PAC is still needed for filtration control.

Table 1. Record
IdentifierMLC-T-OAG-002395
FieldOil and gas
SubjectDrilling Fluids
Record as JSON 
{
  "id": "MLC-T-OAG-002395",
  "term": "Mixed-metal hydroxide",
  "field": "Oil and gas",
  "definition": "A class of synthetic layered double hydroxides, typically magnesium and aluminium hydroxide formed by co-precipitation, whose particles carry a positive charge. Added to bentonite-based water muds, they link the negatively charged clay platelets into a fragile gel, giving strong shear thinning, high low-shear viscosity and good suspension of cuttings. MMH is a viscosifier only, so a separate polymer such as starch or PAC is still needed for filtration control.",
  "subject": "Drilling Fluids",
  "url": "https://mlchart.com/terminology/oil-and-gas/mixed-metal-hydroxide/"
}

Record 2,553 of 4,469 in Oil and gas terminology (MLC-0103). Request the full dataset.